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. 2018 Jul 25;18(8):2411. doi: 10.3390/s18082411

Figure 8.

Figure 8

Experiment results with lack of fusion caused by surface contamination on workpiece: (a) Top-view of the edge weld profile observed under scanning electron microscopic (SEM) with 100× magnification; (b) Characteristic parameters of weld pool monitored during MPAW.